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County ZIP codes · Ohio · FIPS 39097

Madison County, OH ZIP Codes

Madison County, Ohio has 11 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 7 of the residential ones lie mainly in Madison County and 4 mainly in a neighboring county; 9 cross the county line. Median household income ranges from $76,250 in 43162 (West Jefferson) to $139,591 in 43064 (Plain City) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Madison County?

43029 · Irwin: $108k43044 · Mechanicsburg: $76k43064 · Plain City: $140k43119 · Galloway: $91k43140 · London: $84k43143 · Mount Sterling: $100k43146 · Orient: $81k43151 · Sedalia: $62k43153 · South Solon: $90k43162 · West Jefferson: $76k45369 · South Vienna: $89k4314043143430644304443146431534536943162431194302943029 · Irwin: $108k43044 · Mechanicsburg: $76k43064 · Plain City: $140k43119 · Galloway: $91k43140 · London: $84k43143 · Mount Sterling: $100k43146 · Orient: $81k43151 · Sedalia: $62k43153 · South Solon: $90k43162 · West Jefferson: $76k45369 · South Vienna: $89k4314043143430644304443146431534536943162431194302943029 · Irwin: $108k43044 · Mechanicsburg: $76k43064 · Plain City: $140k43119 · Galloway: $91k43140 · London: $84k43143 · Mount Sterling: $100k43146 · Orient: $81k43151 · Sedalia: $62k43153 · South Solon: $90k43162 · West Jefferson: $76k45369 · South Vienna: $89k43140431434306443044431464315345369431624311943029
The residential ZIP codes of Madison County (whole outlines, including the parts in neighboring counties), shaded by median household income in national fifths (ACS 2020-2024). <$54.1k$98.1k+no figure

Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).

How different are its ZIP codes?

The middle half of its ranked ZIP codes (1,000+ people living in households) report median household incomes between $76,397 and $91,224.

They carry 11 postal town names.

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).

All 11 residential ZIP codes in Madison County

7 ZIP codes lie mainly in Madison County; 4 more reach into it from a neighboring county and follow the first table.

Residential ZIP codes mainly in Madison County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
43140 London 24,237 110 $84k $243k 96%
43064 Plain City 18,143 175 $140k $462k 57%
43162 West Jefferson 6,896 147 $76k $214k 100%
43143 Mount Sterling 5,803 43 $100k $243k 54%
43153 South Solon 1,112 21 $90k $184k 75%
43029 Irwin 544 23 $108k – 79%
43151 Sedalia 233 896 $62k $137k 100%

Partly in Madison County

Residential ZIP codes mainly in another county that reach at least 1% into Madison County, by their share here
In this county
43044 Mechanicsburg 4,964 62 $76k $235k 16%
43119 Galloway 29,660 924 $91k $254k 11%
45369 South Vienna 4,120 96 $89k $221k 3%
43146 Orient 13,387 172 $81k $322k 1%

Download the 11 ZIP codes as CSV

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; county shares by land area (Census 2020 ZCTA-county relationship file).

Which ZIP codes cross the county line?

9 ZIP codes of Madison County extend into another county. A ZIP code follows mail routes, not county borders.

Share of each ZIP code's land in Madison County and in the neighboring counties
ZIPIn MadisonElsewhere
4311911%Franklin County 89%
4314096%Franklin County 2%; Clark County 1%
4306457%Union County 43%
431461%Pickaway County 81%; Franklin County 18%
4314354%Pickaway County 29%; Fayette County 17%
4304416%Champaign County 69%; Clark County 15%
453693%Clark County 97%
4315375%Clark County 14%; Fayette County 9%; Greene County 2%
4302979%Union County 21%

Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).

Which first three digits do Madison County's ZIP codes use?

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Madison County's ZIP codes use 3 prefixes: 430, 431 and 453.

Three-digit prefixes of Madison County's ZIP codes, the sectional center for each (USPS labeling list L005, effective October 1, 2026) and how many of the prefix's codes are Madison County's
PrefixSectional centerHereAll codes
430 Columbus, OH (SCF 430) 3 70
431 Columbus, OH (SCF 430) 7 49
453 Dayton, OH (SCF 453) 1 80

Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.